原因：mysql.server里面这两行没有添加路径，添加路径后即可解决问题

之后又出现新的报错：

Starting MySQL.2023-11-23T17:38:37.571813Z mysqld_safe error: log-error set to '/var/log/mariadb/mariadb.log', however file don't exists. Create writable for user 'mysql'.

 ERROR! The server quit without updating PID file (/data/mysql-5.7.27/data/localhost.localdomain.pid).

该报错原因为缺少log目录，所有的报错都可以根据报错提示进行解决。创建该目录，并赋予权限：

2,mkdir /var/log/mariadb

touch /var/log/mariadb/mariadb.log

chown -R mysql:mysql /var/log/mariadb/

/usr/local/mysql/support-files/mysql.server start

原文链接：https://blog.csdn.net/qq_45839663/article/details/127248445

3,再次启动，成功。